Math

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http://www.geogebra.org/en/upload/files/english/aharbaugh/Football_Task.html

http://www.mathopenref.com/polygonexteriorangles.html

http://www.xtranormal.com/watch/7338243/ mpm

http://www.facebook.com/home.php?#!/group.php?gid=114402558095 mpm